/Engine/Source/Runtime/MeshDescription/Public/MeshDescription.h
Deletes a vertex instance from a mesh
void DeleteVertexInstance ( const [FVertexInstanceID](API\Runtime\MeshDescription\FVertexInstanceID) VertexInstanceID, [TArray](API\Runtime\Core\Containers\TArray)< [FVertexID](API\Runtime\MeshDescription\FVertexID) > * InOutOrphanedVerticesPtr )